Most South American countries gained independence between 1810 and 1830.
Well, the Sumerians were very hard working and inventive people; most of their inventions are actually used today by almost everyone! (If you didn’t already know) Sumerians invented the first written language, cuneiform, the wheel, the sail boat, the game “Checkers” and much more.
By Sumerians working together they not only created those things, but they also started trading with others which fulfilled them with much needed food, clothing, and raw materials. So by them opening up to trade, they were able to prosper longer.
I hope this helps what you are looking for!
Austin-
What you are describing is the system of checks and balances.
In the United States there is a system of checks and balances. In our federal government, we have three different branches including the executive, legislative, and judicial. In our system, the executive branch consists of the president while the legislative branch consists of the Senate and House of Representatives. These different branches all have the ability to check the other branches. This ensures that no one branch or individual will gain too much power.